Flash vaporization, definition

Following OSHA definitions, a flammable material is any liquid having a flash point below 100°F. The NFPA expands this definition by including the stipulation that the vapor cannot exceed 40 psi... 

Nonflammable indicates that no flash point was observed by the ASTM test method D-3278-82 or D-56 below the boiling point of the solvent mixture or below 100°F, whichever is lower (this is the DOT, ANSI, and NFPA definition). The composition of liquid blends can vary from the originally supplied composition during use, owing to tile differing vapor pressures of the individual constituents. Care must be taken to avoid preferential loss of PFCs, which would result in flammable mixtures. 

Ethylene (Ethene or Elayl), H2C CH2 mw 28.05 colorless, flammable, dangerous to handle gas with characteristic sweet odor and taste sp gr 0.975 (air = 1.0), mp —169.4°, bp —103.8°, flash p —136°C explosive limits in air, % by vol, lower 3.0 upper 34.0 si sol in w, more in ale sol in eth. Ethylene is a major component of petroleum refinery gas from cracking units, and is sometimes recovered therefrom by distillation or other means. Some pure ethylene is produced by passing hot ethanol vapors over a catalyst, such as activated alumina (Ref 4). Its laboratory prepn consists of heating ethanol in definite proportions with sulfuric acid of certain concns. By using a 90% acid and 90% ale, ethylene can be produced in a regular stream at a yield of 84 to 85% of theory (Ref 2). 

Flash point is the temperature a liquid must be at before it will provide the fuel vapor required for a fire to ignite. A more technical definition for flash point is the lowest temperature a liquid may be at and still have the capability of liberating flanunable vapors at a... 

Classification Mixed petroleum hydrocarbons Definition Mixed isomer contg. 85% nonane and 15% trimethylbenzene Properties Colorless clear liq. petrol, odor misc. with abs. alcohol, benzene, ether, chloroform, CCI CS2, most org. soivs. insol. in water m.w. 150 sp.gr. 0.78 f.p. -70 C b.p. 157-196 C flash pt. (CC) 40 C ref. index 1.43 (20 C) KB value 32-37 Toxicology ACGIH TLV/TWA100 ppm LD50 (oral, rat) > 5 g/kg, (skin, rabbit) > 3 g/kg LCLo (inh., cat, 2.5 h) 10 g/m mildly toxic by inh. (irritation, CNS effects, headache, dizziness, confusion, fatigue) human eye irritant probably a mild to mod. skin irritation TSCA listed Precaution Combustible flamm. exposed to heat or flame explosive in vapor form when exposed to heat or flame reactive with oxidizing materials... 

Definition (2-Alkenyl) succinic anhydrides in which the alkenyl groups are derived from olefins which contain not less than 78% C30 and higher groups Properties Lt. amber liq. dens. 0.952 g/ml vapor pressure < 1 mm Hg (20 C) b.p. 250 C (5 mm Hg) flash pt. (PM) 204 C... 

Classification Carboxylic acid ester Definition Ester of amyl alcohol and acetic acid Empirical C7H14O2 Pormula CH3COOC5H11 Properties Colorless liq. (pure), yel. liq. (commercial) pear or banana-like odor completely sol. in alcohol, ether si. sol. in water m.w. 130.19 sp.gr. 0.876 (20 C) vapor pressure 3.5 mm Hg m.p. -70.8 C b.p. 149 C flash pt. 

Butoxyethyl 3-pyridinecarboxylate. See Butoxyethyl nicotinate Butoxyethyl stearate CAS 109-38-6 EINECS/ELINCS 203-668-3 Synonyms 2-Butoxyethyloctadecanoate Ethylene glycol monobutyl ether stearate Octadecanoic acid, 2-butoxyethyl ester Definition Ester of butoxyethanol and stearic acid Empirical C24H48O3 Formula C17H35COOC2H4OC4H9 Properties Clear water-wh. to si. yel. liq., fatty odor insol. in water sp.gr. 0.86 vapor pressure < 0.01 mm Hg (20 C) f.p. 14 C b.p. > 190 C flash pt. (COC) 381 F... 

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